TRXQ1
RXQ1
FM NARROW BAND TRANSCEIVERS
RXQ1 Pinout Detail
Top View
RF Gnd.
1
18 Channel Select
17 Vcc
Antenna
RF Gnd.
nc
2
3
4
5
6
7
8
9
16 Rx Select
15 Tx Select
14 Tx Data
13 nc
Gnd.
nc
nc
12 Rx Data
11 nc
nc
RXQ1
FM Transceiver
Gnd.
10 Gnd.
30.48
Pin Descriptions
Pin
Number
Name
Type
In
Description
For best results, these pins should be connected to the ground
plane against which the antenna radiates.
Nominal 50 ohm input/output impedance capacitively isolated from
the internal circuit.
1,3
2
RF GND
Antenna
In / Out
4, 6, 7, 8,
11, 13
-
No Connection
nc
5, 9, 10
In
Connect to 0 volts.
GND
Received data output to host controller (CMOS logic out)
representing true data as supplied to the transmitter.
12
Out
In
Rx
Tx
Transmit data input from host controller
Data input to the transmitter can be directly interfaced to CMOS
logic drive operating on the same supply voltage as the transceiver
14
15
16
In
In
Transmit select. Active LOW.
Receive select. Active LOW.
Tx SELECT
Rx SELECT
Positive supply voltage connection. Decouple with 100n ceramic
capacitor to ground.
17
In
Vcc
Channel Select;
18
In
CS
Logic 0 selects 433.92MHz
Logic 1 selects 434.33MHz
Operation Table
Tx Select
RX Select
Function
0
0
1
1
0
1
0
1
Power Down Mode
Transmit Mode
Receive Mode
Power Down Mode
DS0353-9 March ‘05
©2005 Reg. No. 227 4001, ENGLAND
Page 2
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